. >>> and can the bay area's tesla survive a romney presidency? we'll take a look in business news. >>> welcome back to now decision 2012. both president obama and mitt romney are back on the campaign trail talking to voters less than 24 hours after the first presidential debate of this campaign. nbc's danielle leigh is in washington with how political advisers say last night's debate could affect today's conversations. >> reporter: republican mitt romney may have secured exactly what he needed out of this first presidential debate, a fresh look for undecided voters. >> he laid out a very clear choice and a big choice. that's what this election is about. >> reporter: the candidates sparred on key issues this election, taxes, job growth and medicare. >> i'd rather have a private plan. i'd just as soon not have the government telling me what kind of health care i can have. >> every study has shown that medicare has lowered administrative costs than private insurance does which is why seniors are generally pretty happy with it. and private insurers h